Resposta:
a) R$ 67.200,00
b) R$ 94.904,48
Explicação passo-a-passo:
a)
juros = capital × tempo × taxa
juros = 100000 × 4 × 12 × 1,4/100
juros = 100 × 48 × 14
juros = 67200
b)
juros = capital × (1 + taxa)^tempo - capital
juros = 100000 × (1 + 0,014)^48 - 100000
juros = 100000 × 1,94904488 - 100000
juros = 194904,488 - 100000
juros = 94904,488
